1. Department of Neurology, Columbia University Irving Medical Center, New York, NY, USA
2. Department of Rehabilitation and Regenerative Medicine, Columbia University Irving Medical Center, New York, NY, USA
3. Department of Neurology, Stanford University School of Medicine, Stanford, CA, USA
4. Department of Physical Therapy, The Children’s Hospital of Philadelphia, Philadelphia, PA, USA
5. Department of Neurology, Boston Children’s Hospital, Harvard Medical School, Boston, MA, USA
6. Department of Physical Therapy and Occupational Therapy, Boston Children’s Hospital, Boston, MA, USA
7. Department of Neurology, University of Rochester, Rochester, NY, USA
8. Department of Pediatrics, Division of Neurology, Nemours Children’s Hospital, Orlando, FL, USA